bsplinecurve bspline_3d_np_c_r 2 3 0 3 1 1 2 3  0 0 0 2  1 1 1 1  1 0 0 1  0 0 0 2
extsurf es_bspline_3d_np_c_r  bspline_3d_np_c_r 0 0 1
offset es_bspline_3d_np_c_r_of es_bspline_3d_np_c_r 1
offset es_bspline_3d_np_c_r_of_of es_bspline_3d_np_c_r_of 1
mkface result es_bspline_3d_np_c_r_of_of 0 1 0 3
set MaxFTol 9.9999999999999995e-08
set MaxETol 6.4348855165764817e-07
set MaxVTol 6.4348855165764838e-07